Print out information about the input MCT AttributeVectoraVect to stdout. flag sets the level of information:

print out names of attributes in aVect.

also print out local max and min of data in aVect.

also print out global max and min of data in aVect.

Same as 3 but include name of this routine.

If flag is 3 or higher, then optional argument comm
must be provided.
If optional argument fld is present, only information for
that field will be printed.
If optional argument istr is present, it will be output
before any of the information.